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📄 update_jsp.java

📁 这是一个图书馆管理系统的jsp代码
💻 JAVA
字号:
🔍 
package org.apache.jsp;

import javax.servlet.*;
import javax.servlet.http.*;
import javax.servlet.jsp.*;
import java.sql.*;

public final class update_jsp extends org.apache.jasper.runtime.HttpJspBase
    implements org.apache.jasper.runtime.JspSourceDependent {

  private static java.util.Vector _jspx_dependants;

  public java.util.List getDependants() {
    return _jspx_dependants;
  }

  public void _jspService(HttpServletRequest request, HttpServletResponse response)
        throws java.io.IOException, ServletException {

    JspFactory _jspxFactory = null;
    PageContext pageContext = null;
    HttpSession session = null;
    ServletContext application = null;
    ServletConfig config = null;
    JspWriter out = null;
    Object page = this;
    JspWriter _jspx_out = null;
    PageContext _jspx_page_context = null;


    try {
      _jspxFactory = JspFactory.getDefaultFactory();
      response.setContentType("text/html; charset=gb2312");
      pageContext = _jspxFactory.getPageContext(this, request, response,
      			"", true, 8192, true);
      _jspx_page_context = pageContext;
      application = pageContext.getServletContext();
      config = pageContext.getServletConfig();
      session = pageContext.getSession();
      out = pageContext.getOut();
      _jspx_out = out;

      out.write("\r\n<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">\r\n<html>\r\n<head>\r\n<meta http-equiv=\"Content-Type\" content=\"text/html; charset=gb2312\">\r\n<title>Update</title>\r\n<style type=\"text/css\">\r\n<!--\r\n.style3 {font-size: 24px}\r\n.style4 {font-size: 18px}\r\n.style5 {font-size: 36px}\r\n-->\r\n</style></head>\r\n\r\n<body>\r\n<form name=\"form1\" method=\"post\" action=\"\">\r\n  <table border=\"0\" cellpadding=\"0\" cellspacing=\"0\">\r\n    <tr align=\"left\" valign=\"top\" bgcolor=\"#000000\">\r\n      <td height=\"100\" colspan=\"2\"><table width=\"100%\" border=\"0\" align=\"left\" cellpadding=\"0\" cellspacing=\"1\" bgcolor=\"#FFFFFF\">\r\n        <tr>\r\n          <td bgcolor=\"#FFFFFF\"><img src=\"F:\\example\\图书馆\\login\\library1.gif\" width=\"699\" height=\"100\" alt=\"\"></td>\r\n        </tr>\r\n      </table></td>\r\n    </tr>\r\n    <tr>\r\n      <td height=\"449\" align=\"left\" valign=\"top\" bgcolor=\"#000000\"><table width=\"99%\" border=\"0\" align=\"left\" cellpadding=\"0\" cellspacing=\"0\" bgcolor=\"#FFFFFF\">\r\n        <tr>\r\n          <td valign=\"top\" bgcolor=\"#CCCCCC\"><table width=\"70%\" border=\"0\" align=\"center\" cellpadding=\"0\" cellspacing=\"1\" bgcolor=\"#CCCCCC\">\r\n");
      out.write("            <tr>\r\n              <td width=\"20\" align=\"right\">&nbsp;</td>\r\n              <td width=\"130\" align=\"center\">&nbsp;</td>\r\n            </tr>\r\n            <tr>\r\n              <td width=\"20\" align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n              <td width=\"130\" align=\"center\"> <a href=\"adduser.jsp\">Adduser</a> </td>\r\n            </tr>\r\n            <tr>\r\n              <td width=\"20\" height=\"5\" align=\"right\">&nbsp;</td>\r\n              <td width=\"130\" height=\"5\" align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n            </tr>\r\n            <tr>\r\n              <td width=\"20\" align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n              <td width=\"130\" align=\"center\"><a href=\"modifyuser.jsp\">Modifyuser</a></td>\r\n            </tr>\r\n            <tr>\r\n              <td width=\"20\" height=\"5\" align=\"right\">&nbsp;</td>\r\n              <td width=\"130\" height=\"5\" align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n");
      out.write("            </tr>\r\n            <tr>\r\n              <td width=\"20\" align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n              <td width=\"130\" align=\"center\"><a href=\"deleteuser.jsp\">Deletuser</a></td>\r\n            </tr>\r\n            <tr>\r\n              <td width=\"20\" align=\"right\">&nbsp;</td>\r\n              <td width=\"130\" align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n            </tr>\r\n            <tr>\r\n              <td width=\"20\" align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n              <td width=\"130\" align=\"center\"><a href=\"searchuser.jsp\">Searchuser</a></td>\r\n            </tr>\r\n            <tr>\r\n              <td width=\"20\" align=\"right\">&nbsp;</td>\r\n              <td width=\"130\" align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n            </tr>\r\n            <tr>\r\n             <td width=\"20\" align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n");
      out.write("              <td width=\"130\" align=\"center\"><a href=\"addbook.jsp\">Addbook</a></td>\r\n            </tr>\r\n            <tr>\r\n              <td width=\"20\" align=\"right\">&nbsp;</td>\r\n              <td width=\"130\" align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n            </tr>\r\n            <tr>\r\n              <td align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n              <td align=\"center\"><a href=\"deletebook.jsp\">Deletebook</a></td>\r\n            </tr>\r\n            <tr>\r\n              <td align=\"right\">&nbsp;</td>\r\n              <td align=\"center\"><img src=\"F:\\example\\图书馆\\loginlibrary4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n            </tr>\r\n            <tr>\r\n              <td align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n              <td align=\"center\"><a href=\"borrowsearch.jsp\">Borrowsearch</a></td>\r\n            </tr>\r\n            <tr>\r\n              <td align=\"right\">&nbsp;</td>\r\n");
      out.write("              <td align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n            </tr>\r\n            <tr>\r\n              <td align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n              <td align=\"center\"><a href=\"search.jsp\">Search</a></td>\r\n            </tr>\r\n            <tr>\r\n              <td align=\"right\">&nbsp;</td>\r\n              <td align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n            </tr>\r\n             <tr>\r\n              <td align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n              <td align=\"center\"><a href=\"userpay.jsp\">Userpay</a></td>\r\n            </tr>\r\n            <tr>\r\n              <td align=\"right\">&nbsp;</td>\r\n              <td align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n            </tr>\r\n             <tr>\r\n              <td align=\"right\"><img src=\"F:\\example\\图书馆\\login/library3.png\" width=\"10\" height=\"10\" alt=\"\"></td>\r\n");
      out.write("              <td align=\"center\"><a href=\"update.jsp\">Update</a></td>\r\n            </tr>\r\n            <tr>\r\n              <td align=\"right\">&nbsp;</td>\r\n              <td align=\"center\"><img src=\"F:\\example\\图书馆\\login/library4.png\" width=\"102\" height=\"5\" alt=\"\"></td>\r\n            </tr>\r\n            <tr>\r\n              <td width=\"20\" align=\"right\">&nbsp;</td>\r\n              <td width=\"130\" align=\"center\">&nbsp;</td>\r\n            </tr>\r\n          </table></td>\r\n        </tr>\r\n        <tr>\r\n          <td height=\"200\" valign=\"top\" bgcolor=\"#CCCCCC\">&nbsp;</td>\r\n        </tr>\r\n      </table></td>\r\n     <td height=\"449\" align=\"center\" valign=\"middle\"><p class=\"style5\">You have succeeded in updating</p>\r\n      <p class=\"style5\">Administrator!</p></td>\r\n    </tr>\r\n    <tr>\r\n      <td bgcolor=\"#666666\">&nbsp;</td>\r\n      <td><img src=\"F:\\example\\图书馆\\login/library2.png\" width=\"573\" height=\"40\" alt=\"\"></td>\r\n    </tr>\r\n  </table>\r\n</form>\r\n\r\n\r\n");
      login.Library Library = null;
      synchronized (session) {
        Library = (login.Library) _jspx_page_context.getAttribute("Library", PageContext.SESSION_SCOPE);
        if (Library == null){
          Library = new login.Library();
          _jspx_page_context.setAttribute("Library", Library, PageContext.SESSION_SCOPE);
          out.write('\r');
          out.write('\n');
        }
      }
      out.write("\r\n<center>\r\n\r\n");

String id = Library.getid();
  int shouldreturndata=0,number=1;
  String title="",strsrd="",returnmoney="yes",returnmoney1="yes";//returndata1="",title1="";

try{
  Connection conn=Library.getConn();
  Statement stmt,stmt1;
   stmt = conn.createStatement();
   ResultSet rs1 = stmt.executeQuery("select * from borrowbook");
   while(rs1.next()){++number;}
   for(int i=1;i<=number;i++){
     ResultSet rs2 = stmt.executeQuery("select * from borrowbook where trailnumber ='" + i + "'");

//int trailnumber =Integer.parseInt(rs1.getString("trailnumber"));//用rs1.getInt()无法识别，尽管数据表数据是int型
  //PreparedStatement pstmt1 = conn.prepareStatement();

//  PreparedStatement pstmt3 = conn.prepareStatement("select * from borrowbook where id ='" + id + "'");

 //  ResultSet rs1 = stmt.executeQuery("select * from borrowbook where id ='" + id + "'");//在用户登陆时，判断用户是不是有超出借期的书没还，把相应纪录的overdata,fee,returnmoney改变，即在每次用户登陆时判断是否要罚款
  // out.println("<p>"+rs1.getString("studnetnumber")+"</p>");
   stmt1=conn.createStatement();//Resultset is closed，是指在一个rs正在循环时，使用这个rs所对应的stmt等，进行操作，产生的rs关闭，一个rs在没有结束时，他的stmt不能被再次使用
  while(rs2.next()){//无效游标有时指缺少rs1.next()

  int returndata=Integer.parseInt(rs2.getString("returndata"));//因为如果returndata为String型，无法判断null,所以用int,可判断0
    //out.println("<p>'"+returndata+"'</p>");
    strsrd=rs2.getString("shouldreturndata");
    //title=rs1.getString("title");
   shouldreturndata=Integer.parseInt(strsrd);
 //  out.println("<p>"+shouldreturndata+"</p>");

//out.println("<p>"+(new java.util.Date().getYear()*365 + new java.util.Date().getMonth()*31 + new java.util.Date().getDay())+"</p>");
  if(returndata==0 && (new java.util.Date().getYear()*365 + new java.util.Date().getMonth()*31 + new java.util.Date().getDay())>shouldreturndata)//new java.util.Date()获得系统当前时间，因为日期的相减比较工作很复杂，所以把日期型变量用get函数转化为相应的int型，在乘以权数，进行比较
{
  int overdata = (new java.util.Date().getYear()*365 + new java.util.Date().getMonth()*31 + new java.util.Date().getDay()) - shouldreturndata;
  //out.println("<p>"+overdata+"</p>");
  double feeperday = 0.01;
  double fee = feeperday*overdata;
  //   Statement stmt=conn.createStatement();

  stmt1.execute("update borrowbook set overdata = '" + overdata + "' where trailnumber ='" + i + "'");
  stmt1.execute("update borrowbook set fee = '" + fee + "' where trailnumber ='" + i + "'");
  stmt1.execute("update borrowbook set returnmoney = 'no' where trailnumber ='" + i + "'");
}
}
}
}catch (Exception ex){
          response.sendRedirect("fail.jsp");
ex.printStackTrace();}


      out.write("\r\n</center>\r\n</body>\r\n</html>\r\n");
    } catch (Throwable t) {
      if (!(t instanceof SkipPageException)){
        out = _jspx_out;
        if (out != null && out.getBufferSize() != 0)
          out.clearBuffer();
        if (_jspx_page_context != null) _jspx_page_context.handlePageException(t);
      }
    } finally {
      if (_jspxFactory != null) _jspxFactory.releasePageContext(_jspx_page_context);
    }
  }
}

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